Improvement in ornamenting canvas for window-screens



UNITED STATES PATENT OFFIoE.

FREDERICK J. H. WOGRAM, OF BROOKLYN, N EW YORK.

IMPROVEMENT INORNAMENTING CANVAS FOR WINDOW-SCREENS.

Specification forming part of Letters Patent No. 152,717, dated June 30, 187-1, application filed December 1?, 1873.

' To all whom it may concern:

and which at the same time will allow the screen so prepared to be cleansed without I111- pairing'the print or the web of the fabric, as will be hereinafter more fully described.

In carrying out my invention I take any suitable canvas, such as is used by ladies for works of en'lbroidery, and cut it according to the required length and width of a window; then saturate it with a solution of alum, thus giving it a sizing and flattening to receive the print. In order to obtain the good effect of the print, as well as to prevent the ink from passing through the meshes and soiling the other side of the canvas, I use, in printing the design or figure on the canvas, a strongsubstantial backing, which is well sized with glue and alum to secure the required, exact, and uniform impression and sharpness of outline. The canvas thus prepared is secured upon the backing, and the former is then ready for printing upon, in one or different colors, in the usual way. The backing prepared as above described presents an even, smooth surface, and will. not allow the ink to run when the impression is made. As soon as the print is dry enonghthe pieces of canvas are to be rubbed on the printed sides York, have invented a equally all over with soft, spongy, or melted parafline or wax, which will not be attacked or changed in their nature by water or soap, or an alkali in water.

The substance thus applied, a sufficient amount, it (the parafline, or wax) will adhere on the canvas, which latter is then to be treated by a clean metal. roller, 1noderately heated, whereby the parafline or wax is melted and impregnates the entire web or texture of the canvas, so that the meshes will all be left open, as if no impregnating substances were applied. Thus the fibrous substance of the canvas will be much stronger and more durable.

For lithographic printing the designs or fig ures are made on the stone, so that the shadowing parts shall appear ver 1 strong and sharp after the etching process is over. The manner in which that is to be done will be fully understood by any one skilled in the art, so that I need not describe it here.

The canvas, or other loosely-woven fabric, prepared as above described, can be used as Window-screens and for other analogous purposes, whereby light and a free circulation of air can be had, and, at the same time, keeping out flies and other insects; also, persons in a room can see freely through the screen, while persons outside cannot see any object or thing inside of the room.

IVhat I claim as my invention, and desire to secure by Letters Patent, is-

The process of ornamenting netting, looselywoven canvas, or other suitable textile fabric forscreens, substantially as hereinbefore specified.

FREDERICK JOHN H. WOGRAM. Vi tnesses FR. M. .RUscunAnPT, J OHN H. BRUNING,

or such other substances 7 

